
//封装获取cookie
function getCookie(name) {
    var arr,
      reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)");
    if ((arr = document.cookie.match(reg))) return unescape(arr[2]);
    else return null;
  }
  
  //封装设置cookie
  //设置为默认时间
  // function setCookie(name, value) {
  //   var exp = new Date();
  //   document.cookie =
  //     name + "=" + escape(value) + ";expires=" + exp.toGMTString();
  // }
  //设置自定义时间
  function setCookie(name, value, time) { 
    var strsec = getsec(time);
    var exp = new Date();
    exp.setTime(exp.getTime() + strsec * 1);
    document.cookie =  name + "=" + escape(value) + ";expires=" + exp.toGMTString();
  }

  
  function getsec(str) {
    // alert(str);
    var str1 = str.substring(1, str.length) * 1;
    var str2 = str.substring(0, 1);
    if (str2 == "s") {
      return str1 * 1000;
    } else if (str2 == "h") {
      return str1 * 60 * 60 * 1000;
    } else if (str2 == "d") {
      return str1 * 24 * 60 * 60 * 1000;
    }
  }
  
  //封装删除cookie
  function delCookie(name) {
    var exp = new Date();
    exp.setTime(exp.getTime() - 1);
    var cval = getCookie(name);
    if (cval != null)
      document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString();
  }